Finding the Third Proportional to 5,057 and 10,320

Step by Step Solution

1. Step 1: Write the proportion equation
   5,057 : 10,320 = 10,320 : x
2. Step 2: Convert to fraction form
   5,057/10,320 = 10,320/x
3. Step 3: Cross multiply
   5,057x = 10,320 × 10,320
4. Step 4: Simplify right side
   5,057x = 106,502,400
5. Step 5: Solve for x
   x = 106,502,400/5,057
6. Step 6: Final answer
   x = 21,060.39